40918423420 has 48 divisors (see below), whose sum is σ = 99105209280. Its totient is φ = 13900460544.

The previous prime is 40918423397. The next prime is 40918423423. The reversal of 40918423420 is 2432481904.

It is a self number, because there is not a number n which added to its sum of digits gives 40918423420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40918423423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1325449 + ... + 1355968.

It is an arithmetic number, because the mean of its divisors is an integer number (2064691860).

Almost surely, 2^40918423420 is an apocalyptic number.

It is an amenable number.

40918423420 is an abundant number, since it is smaller than the sum of its proper divisors (58186785860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40918423420 is a wasteful number, since it uses less digits than its factorization.

40918423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681542 (or 2681540 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 40918423420 in words is "forty billion, nine hundred eighteen million, four hundred twenty-three thousand, four hundred twenty".